Datasheet

UWE Series
Wide Input, Isolated
Eighth-Brick DC-DC Converters
MDC_UWE Series.E04 Page 8 of 23
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PERFORMANCE DATA
UWE-3.3/20-Q48P
UWE-3.3/20-Q48P
UWE-3.3/20-Q48P
Maximum Current Temperature Derating @sea level
(VIN = 24V, transverse airfl ow, with baseplate)
15
16
17
18
19
20
20 25 30 35 40 45 50 55 60 65 70 75 80 85 90
Ambient Temperature (°C)
Output Current (Amps)
Natural Convection
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
Maximum Current Temperature Derating @sea level
(VIN = 48V, transverse airfl ow, with baseplate)
12
13
14
15
16
17
18
19
20
20 25 30 35 40 45 50 55 60 65 70 75 80 85 90
Ambient Temperature (°C)
Output Current (Amps)
Natural Convection
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
Effi ciency vs. Line Voltage and Load Current @ 25°C
50
54
58
62
66
70
74
78
82
86
90
94
2 4 6 8 10 12 14 16 18 20
Vin = 60 V
Vin = 48 V
Vin = 75 V
Vin = 36 V
Vin = 24 V
Vin = 18 V
Load Current (Amps)
Efficiency (%)
Maximum Current Temperature Derating @ sea level
(VIN = 24V, transverse airfl ow, no baseplate)
15
16
17
18
19
20
20 25 30 35 40 45 50 55 60 65 70 75 80 85 90
Ambient Temperature (°C)
Output Current (Amps)
Natural Convection
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
Maximum Current Temperature Derating @ sea level
(VIN = 48V, transverse airfl ow, no baseplate)
20 25 30 35 40 45 50 55 60 65 70 75 80 85 90
14
15
16
17
18
19
20
Ambient Temperature (°C)
Output Current (Amps)
Natural Convection
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)